Humidifier



FIG. 1 is a perspective view of the design for a humidifier inaccordance with the present invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof; the left side being amirror image of that shown;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a bottom plan view thereof

The ornamental design for a humidifier, as shown and described.